Ferroalloy smelting: refining. Low-grade iron alloy smelting crucible was started around 1860. Later, with the development of blast furnace smelting ferromanganese and silicon below 12% ferrosilicon. Between 1890 - 1910 in France began with the electric arc furnace ferroalloy production. Moisan has used an electric arc furnace for difficult elements to restore the system test 65 fume, Carvoeiro 55 ferrosilicon used in industrial production, when both coke and charcoal as reductant related ore products are mostly high-carbon. Ferroalloy smelting: refining. Due to the high cost of production of aluminum thermal method, desilication more refined method has been applied. Until now carbon, low carbon, low carbon ferrochrome 70 silica, carbon, carbon ferromanganese, manganese metal refining mostly still use this method. Refining ferrochrome PERRIN that the ore, lime and silicon-chromium alloy melt liquid by heat exchange to accelerate the reaction mix is ??off the further development of silicon refining method. Ferrosilicon ferrosilicon _ 50 _ Hua Tuo Hua Tuo metallurgy by Anyang metallurgical limited liability company. Anyang Hua Tuo metallurgical limited liability company (www.htyjnc.com) strong, credible, in Anyang ferroalloy products and other industries and has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hua Tuo metallurgy and you hand into the brilliant, for a better future!